Blimey, lets go looking for things to worry about!
In answer to the original OP, assuming LHR is out of the question, I would have thought a DUB connection, preferably with an EI codeshare, would be top of the list to give easier connections to the US than via AMS.
Any other European hub is a double edged sword - would the competition cause KLM to up their game or retreat?
Last edited by SWBKCB; 25th Feb 2018 at 16:08.